bcfe88dfdc
## Summary This PR adds a lowering similar to that seen in https://github.com/astral-sh/uv/pull/3100, but this time, for markers. Like `PubGrubPackageInner::Extra`, we now have `PubGrubPackageInner::Marker`. The dependencies of the `Marker` are `PubGrubPackageInner::Package` with and without the marker. As an example of why this is useful: assume we have `urllib3>=1.22.0` as a direct dependency. Later, we see `urllib3 ; python_version > '3.7'` as a transitive dependency. As-is, we might (for some reason) pick a very old version of `urllib3` to satisfy `urllib3 ; python_version > '3.7'`, then attempt to fetch its dependencies, which could even involve building a very old version of `urllib3 ; python_version > '3.7'`. Once we fetch the dependencies, we would see that `urllib3` at the same version is _also_ a dependency (because we tack it on). In the new scheme though, as soon as we "choose" the very old version of `urllib3 ; python_version > '3.7'`, we'd then see that `urllib3` (the base package) is also a dependency; so we see a conflict before we even fetch the dependencies of the old variant. With this, I can successfully resolve the case in #4099. Closes https://github.com/astral-sh/uv/issues/4099.
Crates
bench
Functionality for benchmarking uv.
cache-key
Generic functionality for caching paths, URLs, and other resources across platforms.
distribution-filename
Parse built distribution (wheel) and source distribution (sdist) filenames to extract structured metadata.
distribution-types
Abstractions for representing built distributions (wheels) and source distributions (sdists), and the sources from which they can be downloaded.
install-wheel-rs
Install built distributions (wheels) into a virtual environment.]
once-map
A waitmap-like concurrent hash map for executing tasks
exactly once.
pep440-rs
Utilities for interacting with Python version numbers and specifiers.
pep508-rs
Utilities for interacting with PEP 508 dependency specifiers.
platform-host
Functionality for detecting the current platform (operating system, architecture, etc.).
platform-tags
Functionality for parsing and inferring Python platform tags as per PEP 425.
uv
Command-line interface for the uv package manager.
uv-build
A PEP 517-compatible build frontend for uv.
uv-cache
Functionality for caching Python packages and associated metadata.
uv-client
Client for interacting with PyPI-compatible HTTP APIs.
uv-dev
Development utilities for uv.
uv-dispatch
A centralized struct for resolving and building source distributions in isolated environments.
Implements the traits defined in uv-types.
uv-distribution
Client for interacting with built distributions (wheels) and source distributions (sdists). Capable of fetching metadata, distribution contents, etc.
uv-extract
Utilities for extracting files from archives.
uv-fs
Utilities for interacting with the filesystem.
uv-git
Functionality for interacting with Git repositories.
uv-installer
Functionality for installing Python packages into a virtual environment.
uv-toolchain
Functionality for detecting and leveraging the current Python interpreter.
uv-normalize
Normalize package and extra names as per Python specifications.
uv-package
Types and functionality for working with Python packages, e.g., parsing wheel files.
uv-requirements
Utilities for reading package requirements from pyproject.toml and requirements.txt files.
uv-resolver
Functionality for resolving Python packages and their dependencies.
uv-types
Shared traits for uv, to avoid circular dependencies.
pypi-types
General-purpose type definitions for types used in PyPI-compatible APIs.
uv-virtualenv
A venv replacement to create virtual environments in Rust.
uv-warnings
User-facing warnings for uv.
requirements-txt
Functionality for parsing requirements.txt files.